Type-writing machine



(No Model.)

'T. S. SPIVBY.

TYPE WRITING MAGHINE.

No. 567,365. Patented Sept. ,8, 1896..

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UNITED STATES PATENT 'OFFICE'.

THOMAS S. SPIVEY, OF CINCINNATI, OHIO. I

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 567,365, dated. September s, 1896.

Application filed A ril 8, 1896, serial No. 586, 6 66 (No model.)

To all whom, it may concern:

Be it known that I, THOMAS S. SPIVEY, a citizen of the United States, residing at Cin cinnati, in the county of Hamilton andState of Ohio, haveinvented certain new and useful Improvements in Type WVriting Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, reference beinghad to the annexed drawings, which form a part of this specification. This invention relates to those type-writingv machines which have a single key capable of revolving a type-wheel, and then swinging a vibrating carriage forward, so as to take off an impressionon a sheet of paper applied to, a platen-roller j ournaled in the carriage; and

; the first part of my improvements includes a specific combination of devices for communicating motion from a key to the carriage, as hereinafter more fully described. i The second part of my improvements com prises a novel construction of brake '-wheel that enables a regular spacing between each printed word, or at any. desired intervalin a line, as hereinafter more fully described. In the annexed drawings, Figure 1 is a plan of a type-writing machine embodying my va rious improvements, the carriage being shift, ed to the right, the platen-roller swungforward, and a portion of it sectioned. Fig. 2 is a vertical section through V the machine from front to rear, said section being taken r the shaft being secured to the arm I).

in the planeof an arm U, the platen roller swung back, and the inking-ribbon omitted.- Fig. 3 is a transverse section taken directlyin front of the carriage. Fig. 4 is an enlarged plan of a portion of the brake-' wheel, a detent being in engagement therewith. Fig. 5 is a detail view.

The main frame A has at rear a pair of lugs a or, within which a rock-shaft B is journaled, provided with a number of guides 11 and arm I to'which lattera detent Y is secured. This detent projects forward and traverses avertical slot 0 of a spring ribbon-guard 0, whose lower or fixed end is D is an'ordinary carriage adapted to recip-, rocate within the guides 19, and having jour:

of the machine,"

abell-crank S S.

naled inv it a platen-roller E and friction-roller F, which elevate the paper in the usual way, the line-feed being regulated by a notched disk e and spring e.

e is a milled head for turning the platenroller a distance of one or two or more teeth 6 at the completion of every line.

G is a fixed guide for one edge of a sheet of paper, and- G is a posite edge.

H is an inking-ribbon running parallel with the roller E and having its ends secured to within holders h j .d is a longitudinal slot in the carriage.

I, in Fig; 2, is a ratchet-bar secured to carriageD, and z' is a pawl adapted to advance said, carriage every time it swings forward toward the IJYPBTYVIIGGI. v

J is alug projecting from the rock-shaft B and jhaving'aplate-spring j secured to its underside, which spring holds said shaft, carriage, and their connections to the normal po-'.

sition. (Seen in Fig. 2. The rearward swing of these parts is arrested by a screw 70; tapped in a standard K, projecting from the main frame and. having the pawl vlpivoted to its upper end.

L is an upright frame having journaled in it the vertical shaft M of a wheel or disk N, whose periphery-is armed with a single row shiftable guide for its oppins h h, capable of being raised or lowered of letters, numerals, and other characters we used in type-writing machines. Arranged below this type-wheel is a brake wheel or disk vO, which may be integral with the upper wheel N and of the same size and shape,

or it may be attached thereto'or to its. shaft M, but incither case said disk 0 must have an interdental space for each letteror char acter a on the other wheel N. One of these spaces, however, is closed, as seen at 0 in Fig. 4:, for a purpose that will presently appear. Shaft M carries a pinion m, engaged with a segmental gear P, having a sweep R pivoted to the upright frame L, as seen at 7' being bent, as shown, permit the free play of This bell-crank is pivoted in Fig. 2, the sweep and slotted at r r to to the sweep and its short arm S is adapted to be swung forward by a key T, also pivoted to said sweep. Key T has at its front end a knob or button t, the depression of which actuates all the working parts of the machine. The long arm S of the bell-crank is at all times in contact with a bend a that unites a pair of the rock-shaft B and preferably integral therewith.

V is a graduated sector-plate attached to the main frame A at o o and so divided as to have one separate and distinct space for each letter, numeral, or other character on the periphery of the type wheel, as sug gested at A* If Z. The two stars on said plate indicate a special division of the same to which the sweep must be brought to afford aspace between each word or at any other suitable interval in a line.

X is a stop secured to the uprightframe L and having its rear end passed through the longitudinal slot 01 of the carriage, as more clearly seen in Fig. 5, a lateral shoulder being projected from one side of said stop.

In constructing this machine the sectorshaped index-plate V may be of any suitable curvature to afford ample space on it for all the necessary letters, &c., and the gearing m P must be so arranged as to produce exactly one complete revolution ofthe type-wheel N every time the sweep R travels from one end to the other of said index-plate. In the normal position of the machine the plate-spring 5 j so turns the rock-shaft B as to throw the carrlage 13 back as far as the stop-screw will permit, which turning of said shaft elevates the front ends of its arms U U, as seen in Fig. 2, thereby raising the long arm of bellcrank S S. A sheet of paper being applied in the usual way, the operator grasps the knob t and swings the lever T either to the right or left until the outer end of sweep R is brought directly over the desired letter on the indexplate, and then said lever is momentarily arrested and its knob or button depressed. Now, as the arrangement of letters on the dial-plate agrees exactly with those on the type-wheel, it will be readily understood that by stoppingthe sweep, say at L*,a corresponding letter on the type-wheel N will be in the proper position to make an impression. Therefore, by simply depressing the button i, the arms U U will be forced down,the shaft B rocked in its bearings a a, and the carriage D and platen-roller E swung forward and an impressionv made in the usual manner. Si- 1n ultaneously with this forward swing of the carriage D its detent Y engages between a pair of teeth of the brake-wheel O, as seen in Fig. 4, and thereby locks all the devices attached to the shaft M. Consequently the centrifugal velocity of said shaft and its attachments can never carry the wheel N around beyond the precise place where it is necessary to stop it, no matter how rapidly or vioparallel arms U U, projecting from lently the machine may be operated. Having thus printed one letter, pressure is removed from the button t, the parts allowed to resume their normal positions, and then the sweep is moved around to the next letter desired, and said button is again depressed. At the end of each word the sweep is brought to rest directly over the two stars' on the indeX, at which instant the untoothed portion 0 of brake-wheel O is in line with the detent Y. Therefore this solid portion 0 of the wheel will prevent a complete entrance of said detent into said wheel, and as the carriage D cannot now swing forward far enough to bring the paper in contact with the type there will be no impression made; or, in other words, this interruption 0 in the brake-wheel O is the word-spacer of my machine. As the carriage travels to the left the stop X simply traverses the slot cl without producing any action; but as soon as said carriage has com pleted its course the parts assume the posi tion seen in Fig. 5. Reference to this illustration shows that the carriage is now arrested by the end of its slot coming in contact with the stop, while the shoulder a: of the latter now bears against the front of said car riage. Therefore, if the machine should be operated repeatedly without running the carriage back to the right, the shoulder will prevent said carriage being swung so far forward as to cause the type-wheel to make any impression either on the paper or platen-roll. Hence it is evident there can be no duplication of impressions or unnecesary wearing of the types.

By applying the ribbon directly to the carriage a very campact arrangement of the machine is afforded, while the facilities for adjusting said ribbon either up or down enables a fresh surface to be brought into position for the type-wheel to act against.

In this specification where it is stated that the letters on the index-plate are arranged similar to those on the type-wheel it is to be understood that when the sweepRis brought directly overaletter on said plate, as K, for example, aletter K on said wheelwillbein the proper position to print from. It is also to be understood that the letters on the indeX are not arranged in alphabetical order, but are so disposed as to render the travel of the sweep as limited as possible, those letters the most frequently used being grouped near the center of said plate.

I claim as my invention 1. The combination, in a type-writing machine, of a type-wheel armed with peripheral letters; an index having a similar arrangement of letters; a rock-shaft having an arm U, with a lateral bend it, at its free end; a reciprocating carriage applied to said rockshaft; a platen-roller journaled in said oarriage; a-sweep R engaged with a pinion m,

secured to the type-wheel shaft, and a bell- 2. A type-writing machine, of the class THOMAS s. SPI'VEY.

the bell-crank being operated by said key, tween two teeth of said wheel being closed,

and one arm'of said crank being in contact as at 0, for the purpose described. IO with said bend it, all as herein described, and In testimony whereof I affix my signature for the purpose stated. in presence of two witnesses.

specified, having a detent Y, and toothed Witnesses: brake-wheel O, wherewith said detent en- JAMES H. LAYMAN, gages, in the manner described; a space be- JOHN 0. ROGERS.' 

